Dusk is defined as the time of day when it is defined as just starting to get dark.
(noun)An example of dusk is around 7 p.m. in the summer.
See dusk in Webster's New World College Dictionary
adjective
Origin: ME, by metathesis < OE dox, dark-colored: for IE base see dun
noun
transitive verb, intransitive verb
See dusk in American Heritage Dictionary 4
noun
Origin:
Origin: From Middle English, dark
Origin: , alteration of Old English dox
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